Modeling shallow water propagation with scattering from rough boundaries

被引：0

作者：

Thorsos, EI ^{[1
]}

Henyey, FS ^{[1
]}

Elam, WT ^{[1
]}

Reynolds, SA ^{[1
]}

Williams, KL ^{[1
]}

机构：

[1] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA

来源：

HIGH FREQUENCY OCEAN ACOUSTICS | 2004年 / 728卷

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Results of PE simulations at 3 kHz will be described for propagation in a shallow water waveguide with a rough sea surface and a flat water-sediment interface overlying absorbing sediments. Pressure fields are simulated in two space dimensions and have been obtained using a wide-angle PE code that accounts for scattering from a rough sea surface. The PE simulation approach is a Monte Carlo method, requiring solutions for many surface realizations in order to obtain results for field moments. To obtain a fast, yet accurate model for average field quantities, a transport theory method based on coupled modes has been developed for both the first and second moments of the field. Estimates for the fourth moment of the field have also been obtained based on the transport theory results for the first and second moments. Transport theory results for the coherent and total intensity, and for the scintillation index, will be presented and compared with Monte Carlo simulations.

引用

页码：132 / 140

页数：9

共 11 条

[1] A SPLIT-STEP PADE SOLUTION FOR THE PARABOLIC EQUATION METHOD [J].